That Which Lurks

Intimidate
Whenever That Which Lurks deals combat
damage to a player, each player mills one card
and discards one card, then exile target card from
a graveyard. You may play that card as long as it
remains in exile and spend mana as though it
were mana of any colour to cast that spell.
Whenever you play a card from exile, make a 1/1
red and black Nightmare Spirit creature token
with intimidate.